Albizia is a genus of about 150 species of mostly fast-growing subtropical and tropical trees and shrubs in the Subfamily Mimosoideae of the legume family, Fabaceae. The genus is pantropical, occurring in Asia, Africa, Madagascar, Central, South, and southern North America and Australia, but mostly in the Old World tropics.

Albizia julibrissin commonly known as Persian Silk Tree, Silk Floss Tree or Pink Silk Tree is a species of tree in the family Fabaceae, native to southwestern and eastern Asia. Albizia julibrissin is a small deciduous tree growing to 5 to 12 m tall, with a broad crown of level or arching branches. The bark is dark greenish grey in colour and striped vertically as it gets older. The leaves are bipinnate, 20 to 45 cm long and 12 to 25 cm broad, divided into 6 to 12 pairs of pinnae, each with 20 to 30 pairs of leaflets; the leaflets are oblong, 11.5 cm long and 24 mm broad. The flowers are produced throughout the summer in dense inflorescences, the individual flowers with small calyx and corola (except the central ones), and a tight cluster of stamens 23 cm long, white or pink with a white base, looking like silky threads. They have been observed to be attractive to bees, butterflies and hummingbirds.